GPT-4.5, launched in February, is OpenAI's most powerful model yet, the company said. Its breakthroughs would make rebuilding GPT ... could retrain GPT-4 from scratch today? Altman said building ...

The platform leverages powerful models, such as Imagen 3 for images, Veo 2 for video generation, Chirp for voiceovers, and Lyria for background music. Users can execute the entire process in ...

Altman added that OpenAI was no longer "compute-constrained" on the best models it could produce — a shift he thinks the world hasn't really understood yet. For many AI companies, the biggest ...